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[ahy-suh-hahy-uh t] /ˌaɪ səˈhaɪ ət/
noun, Meteorology
a line drawn on a map connecting points having equal rainfall at a certain time or for a stated period.
Origin of isohyet
1895-1900; iso- + -hyet < Greek hyetós rain
Related forms
isohyetal, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for isohyet
  • Compute the area between successive isohyetal lines and multiply by the average of the isohyet values.
  • The track itself is roughly parallel to the two inch isohyet.
  • Interpolation between isohyets was used when the site did not fall exactly on a particular isohyet.
British Dictionary definitions for isohyet


a line on a map connecting places having equal rainfall
Word Origin
C19: from iso- + -hyet, from Greek huetos rain
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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isohyet in Science
A line drawn on a weather map connecting points that receive equal amounts of precipitation during a given period of time.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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